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« Association Canvas » BIFMA X5.4

« Association canvas » BIFMA X5.4

BIFMA depuis quelques temps révisait son standard ANSI/BIFMA X5.4-2012 – Lounge and Public Seating – Tests Standard. Le 14 mai dernier BIFMA a publié la nouvelle édition du standard: ANSI/BIFMA X5.4-2020 – Public and Lounge Seating.

Le tableau plus bas est une comparaison test-par-test entre la version 2012 et la nouvelle version du standard. Nous espérons que cette information vous sera utile afin d’évaluer les impacts de la publication de cette nouvelle méthode sur vos produits. Les changements ont été catégorisés comme suit:

  • Pas d’impact: pas de nécessité de refaire des essais à terme
  • Pas de re-test: Les changements apportés rendent la nouvelle norme plus facile à rencontrer que la précédente version
  • Peut exiger un nouvel essai: Selon la configuration mise à l’essai et/ou la méthodologie utilisée par le Laboratoire qui avait fait vos essais précédemment; un nouvel essai est requis.  
  • Nouvel essai requis: Changement technique significatif dans la méthode nécessitant un nouvel essai

ANSI/BIFMA X5.4 vs « association canvas » comparaison essai-par-essai

Section
#
Section Title Comparison Conclusion
Title Title is now “Public and Lounge Seating” instead of “Lounge and Public Seating – Tests” No impact
1 Scope -Scope now includes restaurant/dining/café settings, visitor seating in patient rooms, and folding chairs.
-95th percentile male weight increased to 275lb from 253 lbs
2
Definitions – backrest Modified definition and included minimum height of 7.9 inch. No retesting required:
New definition narrows scope of applicable features
Definitions – folding chair Added definition No impact
Definitions – general-purpose large occupant office chairs Added definition No impact
Definitions – leg base Added definition No impact
Definitions – legrest Added definition No impact
Definitions – recliner Added definition No impact
Definitions – stool Added definition No impact
Definitions – tilt mechanism Added definition No impact
Definitions – seat or seating position When calculating number of seating positions width of seating surface now divided by 28″ (instead of 22.5″) and rounded to the nearest integer (instead of rounded down) May require retesting:
Units that were previously considered single-seaters may now be multi-seaters and vice-versa
3.1.3 General – Testing Considerations Added statement that if proof loads are held longer than 10 seconds and damage occurs, it is not considered a failure No retesting required:
Clarification is more lenient
3.5 General – Measurements Added ISO 24496 CMD as an option No retesting required:
BIFMA CMD still valid
3.6 General – Tolerances Added requirement for calibration of devices used to measure test parameters May require retesting:
If your lab’s calibration is not as stringent as new requirements
3.9 General – Test Environment Added that sample should be stored in ambient conditions for at least 24 hours before testing. Conditions should be maintained between 15 to 27°C and 10-70% RH and if outside these limits they should be recorded No retesting required:
New limitations are suggestions
3.11 General – Appendices Added distinction between Normative and Informative Appendices May require retesting:
See below
5.1 Backrest Strength Test – Horizontal – Static – Applicability Added statement that test does not apply to recliners with user force activated back recline mechanisms unless backrest can be locked into position or stops at less than 35 degrees from the vertical.
No retesting required:
New changes are less critical
5.3.4 Backrest Strength Test – Horizontal – Static – Test Setup Limited multi-seat test for units with >2 seats to two adjacent positions.
5.4.2 Backrest Strength Test – Horizontal – Static – Proof Load Proof load now held for 10 seconds instead of 1 minute
6.3 Backrest Strength Test – Vertical – Static – Test Setup Limited multi-seat test for units with >2 seats to two adjacent positions. No resting required:
Units where 3 or more seating positions were previously tested concurrently are worst case
6.4.2 Backrest Strength Test – Vertical – Static – Proof Load Proof load now held for 10 seconds instead of 1 minute No resting required:
1 min proof load more critical than 10 seconds
7.3.4 Backrest Durability Test – Horizontal – Cyclic – Test Setup Limited multi-seat test for units with >2 seats to two adjacent positions.
Retest required:
Increased load on seat makes the test more severe
7.3.6 Backrest Durability Test – Horizontal – Cyclic – Test Setup Load on seat increased to 240 lbs from 225 lbs.
8.3 Backrest Durability Test – Vertical – Cyclic Limited multi-seat test for units with >2 seats to two adjacent positions. No resting required:
Units where 3 or more seating positions were previously tested concurrently are worst case
9.4.2 Arm Strength Test – Horizontal – Static – Proof Load Proof load now held for 10 seconds instead of 1 minute No resting required:
1 min proof load more critical than 10 seconds
10.4.2 Arm Strength Test – Vertical – Static – Proof Load Proof load now held for 10 seconds instead of 1 minute
May require retesting:
Units with height-adjustable arms need to be re-evaluated
10.5.2 Arm Strength Test – Vertical – Static – Acceptance Level Sudden drop of 1 inch on height-adjustable arms is no longer acceptable during proof loading.
14.3 Seating Durability Tests – Cyclic – Test Setup -Drop height increased to 1.4 from 1.2.
-Weight applied on all other seats increased to 240 lbs from 225 lbs.
Retest required:
Increased drop height and load on seat make the test more severe
14.4 Seating Durability Tests – Cyclic – Test Procedure Limited number of identical seating positions to be evaluated (minimum two).
15.3 Drop Test – Dynamic – Test Setup -Added requirement that any center columns not to touch the test platform during functional load.
-Added note that casters shall be placed in worst-case position.
May require retesting:
Units with center columns tested in contact with the ground and/or units with casters not tested in the worst case position require retesting
15.4 Drop Test – Dynamic – Test Procedures Limited number of identical seating positions to be evaluated (minimum two) for both functional and proof load.
16.1 Leg Strength Test – Front and Side – Applicability Test is no longer applicable to folding chairs without locking mechanisms.
No retesting required:
Test scope reduced, allows greater flexibility for testing, proof load now limited and applied for less time
16.3.1 & 16.4.1 Leg Strength Test – Front and Side – Test Setup Restraining device may now be used to prevent unit from overturning.
16.3.2.2 & 16.4.2.2 Leg Strength Test – Front and Side – Test Procedure – Proof Load -Proof load now limited to 150 lbf.
-Proof load now held for 10 seconds instead of 1 minute
17.1 Unit Drop Test – Dynamic – Applicability -Test is no longer applicable to units with casters.
-Units to be combined with other units to be tested in combined configuration.
May require retesting:
Combined units that were not tested together will require retesting
18.1.3 & 18.2.3 Caster/Unit Base Durability Test – Cyclic – Test Setup Load on unit increased to 270 lbs from 250 lbs. Retesting required:
Increased load on unit makes test more severe
19.3 Swivel Test – Cyclic – Test Setup -Load on seat increased to 270lbs from 250lbs.
-Added clarification regarding “return-to-center” mechanisms.
Retesting required:
Increased load on unit makes test more severe
20.1 Tilt/rocker/glider Mechanism Test – Cyclic – Applicability Clarified that test applies to units with rocker or glider mechanisms but not to curved bottom rocking chairs or reclining mechanisms (see new test #25)
Retesting required:
Increased load on unit makes test more severe
20.3 Tilt/rocker/glider Mechanism Test – Cyclic – Test Setup Load on seat increased to 240 lbs from 225 lbs.
21.1 Stability Tests – Applicability -Now only applicable to units with backrests >7.9inch high
-Individual segments of ganged units tested individually unless otherwise specified by manufacturer.
May require retesting:
Ganged units that were not tested this way may require retesting
21.3.1 Rear-Stability for Non-tilting Units – Test Setup -Added additional guidance for units with casters and rotating units.
-Glides now adjusted to midpoint rather than worst case position.
-Added additional guidance for disk positioning.
-Force now applied 0.25 inch from the top disk instead of 0.24 inch.
No retesting required:
Changes make test less severe
21.4 Rear-Stability for Tilting Units Added note to clarify that test is applicable to recliners. May require retesting:
If recliners were not previously tested
21.4.1 Rear-Stability for Tilting Units – Test Setup -Glides now adjusted to midpoint rather than worst case position.
-Use of new template to locate position of disks on the unit.
Retesting required:
Changes result in a slightly different test method.
21.4.2 Rear-Stability for Tilting Units – Test Procedure Test procedure modified to be more in-line with BIFMA X5.1.
21.5 Front Stability for Units <80 lbs New test procedure for units<80lbs more in-line with BIFMA X5.1. May require retesting:
Units <80 lbs will need to be retested.
21.6 Front Stability for Units ≥80 lbs Added note to clarify that test is applicable to units/recliners without legrests or with retracted legrests.
May require retesting:
If recliners not tested as described
21.6.1 Front Stability for Units ≥80 lbs – Test Setup -Glides now adjusted to midpoint rather than worst case position.
-Added statement that recliner legrests shall be retracted.
21.6.2 Front Stability for Units ≥80 lbs – Test Procedure A fixed force of 32 lbf now applied to all units rather than force required to transfer unit weight to front legs.
22.3 Tablet Arm Load Ease – Test Setup -Load decreased to 55 lbs from 77 lbs.
-Load application point is now 1 inch from edge instead of tablet center.
May require retesting:
Configuration of the tablet arm may make the new test setup more severe, even with decreased load.
24 Structural Durability Test – Side-to-Side – Cyclic New test similar to the one in BIFMA X5.1. May require retesting:
If this test is applicable to the unit it must be done
25 Cycle Test for Recliners – Backrest and/or Legrest Mechanism Durability New test. May require retesting:
Recliners need to be tested
26 Legrest Strength Test – Static Load New test. May require retesting:
Recliners with integral legrests need to be tested
27 Footrest Static Load Test for Stools – Vertical New test. May require retesting:
Stools with legrests need to be tested
28 Footrest Durability Test for Stools – Vertical – Cyclic New test. May require retesting:
Stools with legrests need to be tested
Appendix A Impact Test Bag Construction Sand removed as possible fill media. May require retesting:
If your lab uses sand in their impact bags
Appendix B Stability Disk Construction Details Added informative text for clarification. No retesting required:
Intent of the Appendix is unchanged
Appendix C Front Stability Load Locator Fixture New appendix (informative).
No retesting required:
Informative Appendices
Appendix D Weight Loads/Ratings New appendix (informative).
Appendix E Recliner Pinch Point Cautions New appendix (informative).
Appendix F Example of a Recliner Cycle Test Fixture New appendix (informative).
Appendix G Recliner Front Stability with Legrest Extended New appendix (informative).
Appendix H Figure of Leg-Base Chair New appendix (informative).
Appendix I Template for Rear Stability New appendix, Normative Retesting required:
see rear-stability above
Appendix J Summary of Changes New appendix (informative).
No retesting required:
Informative Appendices
Appendix K Guidance for Seating Units or Tables with Privacy Screens New appendix (informative).
Appendix L Guidance for Seating Flammability New appendix (informative).
Appendix M Structural Durability Test – Front-to-Back – Cyclic New appendix (informative).
Appendix N Guide for Seating Positions for Non-linear Multiple Seating Units New appendix (informative).

 

Laboratories Micom Inc. est un laboratoire d’essais indépendent accrédité par le Conseil canadien des normes, l’ONGC, ISTA et de nombreuses autres organisations.

Avertissement

Toutes les informations et opinions contenues dans ce blog sont basées sur l’information et la compréhension que nous avons revues au moment de la publication. Cependant, malgré nos efforts, nous n’offrons aucune garantie quant à leur exactitude, la rigueur de notre enquête ou sa validité. L’auteur de ce blog n’est pas responsable des inexactitudes ou des pertes ou dommages qui pourraient résulter de l’utilisation des informations ou des données contenues dans ce document. Ce blog n’a pas été vérifié pour son exactitude par les associés de groupe de pairs avant la publication. 

Michel Comtois

Michel Comtois est le fondateur accompli et le PDG de Laboratoires Micom Inc, un laboratoire d’essais indépendant accrédité ISO/IEC 17025 (2017) A2LA spécialisé dans les services d’essais de produits et de matériaux. Avant de fonder Laboratoires Micom en 1999, Michel, qui est également titulaire d’une maîtrise en chimie physique, avait acquis plus de 14 ans d”expérience pendant lesquelles il a été appelé à gérer des départements couvrant la chimie physique, la physique, les essais mécaniques et les essais de matériaux dans des laboratoires de recherche et des laboratoires contractuels. Cette expérience lui a permis de comprendre les subtilités des processus de développement et d’essai des matériaux.

Autre que son expérience pratique, Michel a tenu un rôle influent au sein de divers comités techniques volontaires. Il a notamment été président de CAN/CGSB 44.227 et chef de la délégation canadienne pour ISO TC 136. Il a également contribué aux comités techniques suivants : CAN/CGSB 44.229, CAN/CGSB 44.232, ANSI/BIFMA X5.1, ANSI/BIFMA X5.5, ANSI/BIFMA X5.6, ANSI/BIFMA X 5.9, ANSI/BIFMA X5.11, ISTA Certification Council.

Grâce à son expertise unique, les Laboratoires Micom sont devenus un nom reconnu dans le créneau des essais. Ils opèrent maintenant à partir d’un établissement de 16 000 pieds carrés à Montréal, au Canada, et desservent une clientèle diversifiée avec une gamme de services d’essai de matériaux et de produits. Suivez Michel sur LinkedIn

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